div{
			text-align: center;
		}
		h2{
			font-family: "宋体";
		    text-shadow: gray 2px 2px 2px;
		}
		h3,.one{
			font-family: "微软雅黑";
		}
		h3{
			color: grey;
		}
		p,h4{
			text-indent:2em;
		}
		h4 span{
			color: red;
		}
		.x{
			font-style: italic;
		}